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Jade in the Serpentinite mélanges of the Rio San Juan Complex from the Dominican Republic

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Acta Geologica Sinica(English Edition) 2015年第A02期89卷 79-80页

作者： SCHERTL Hans-Peter mARESCH walter V. HERTWIG Andreas Institute of Geology Mineralogy and GeophysicsRuhr-University Bochum

New occurrences of jadeitite, jadeite quartzites, and jadeite-lawsonitequartzites have recently been discovered in the Rio San Juan Complex （RSJC） of the northern Dominican Republic. These rocks are found in serpentinite mé1anges associated with a former intra-oceanic subduction zone （Fig. 1）. The mé1anges contain blocks of various high-pressure （HP） metamorphic rock types such as blueschist, eclogite, jadeitite, orthogneiss, rare cymritebearing rocks, marble and metapelite.

关键词： RESEARCH metamorphic rocks Petrology Serpentinite Jade melanges (Petrology)

Effect of Graphene Nanoribbons (TexasPEG) on locomotor function recovery in a rat model of lumbar spinal cord transection

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Neural Regeneration Research 2018年第8期13卷 1440-1446页

作者： C-Yoon Kim William K. A. Sikkema Jin Kim Jeong Ah Kim James walter Raymond Dieter Hyung-min Chung Andrea mana James m. Tour Sergio Canavero Department of Stem Cell Biology School of Medicine Konkuk University Seoul Korea Department of Laboratory Animal medicine College of Veterinary Medicine Seoul National University Seoul Korea Department of Chemistry Department of Materials Science and NanoEngineering and The NanoCarbon Center Rice University Houston TXUSA Biomedical Omics Group Korea Basic Science Institute Cheongju-si Chungbuk Korea Research Service Hines Veterans Administration Hospital Hines IL USA HEAVEN/GEmINI International Collaborative Group Turin Italy

A sharply transected spinal cord has been shown to be fused under the accelerating influence of membrane fusogens such as polyethylene glycol （PEG）（GEmINI protocol）. Previous work provided evidence that this is in fact possible. Other fusogens might improve current results. In this study, we aimed to assess the effects of PEGylated graphene nanoribons （PEG-GNR, and called ＂TexasPEG＂ when prepared as lwt% dispersion in PEG600） versus placebo （saline） on locomotor function recovery and cellular level in a rat model of spinal cord transection at lumbar segment 1 （L1） level. In vivo and in vitro experiments （n -- 10 per experiment） were designed. In the in vivo experiment, all rats were submitted to full spinal cord transection at L1 level. Five weeks later, behavioral assessment was performed using the Basso Beattie Bresnahan （BBB） locomotor rating scale. Immunohistochemical staining with neuron marker neurofilament 200 （NF200） antibody and astrocyt- ic scar marker glial fibrillary acidic protein （GFAP） was also performed in the injured spinal cord. In the in vitro experiment, the effects of TexasPEG application for 72 hours on the neurite outgrowth of SH-SYSY cells were observed under the inverted microscope. Results of both in vivo and in vitro experiments suggest that TexasPEG reduces the formation of glial scars, promotes the regeneration of neurites, and thereby contributes to the recovery of locomotor function of a rat model of spinal cord transfection.

关键词： nerve regeneration spinal cord transfection spinal cord fusion GEmINI TexasPEG graphene nanoribbons

Pathway engineering strategies for improved product yield in yeast-based industrial ethanol production

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Synthetic and Systems Biotechnology 2022年第1期7卷 554-566页

作者： Aafke C.A.van Aalsta Sophie C.de Valk walter m.van Gulik mickel L.A.Jansen Jack T.Pronka Robert mans Department of Biotechnology Delft University of TechnologyVan der Maasweg 92629HZ Delftthe Netherlands DSm Biotechnology Centre Alexander Fleminglaan 12613AX Delftthe Netherlands

Product yield on carbohydrate feedstocks is a key performance indicator for industrial ethanol production with the yeast Saccharomyces *** paper reviews pathway engineering strategies for improving ethanol yield on glucose and/or sucrose in anaerobic cultures of this yeast by altering the ratio of ethanol production,yeast growth and glycerol *** attention is paid to strategies aimed at altering energy coupling of alcoholic fermentation and to strategies for altering redox-cofactor coupling in carbon and nitrogen meta-bolism that aim to reduce or eliminate the role of glycerol formation in anaerobic redox *** addition to providing an overview of scientific advances we discuss context dependency,theoretical impact and potential for industrial application of different proposed and developed strategies.

关键词： Saccharomyces cerevisiae Synthetic biology metabolic engineering Biofuels Redox metabolism Energy metabolism

Utility of magnetic resonance imaging in anorectal disease

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World Journal of Gastroenterology 2007年第23期13卷 3153-3158页

作者： Loren Berman Gary m Israel Shirley m mcCarthy Jeffrey C Weinreb walter E Longo Department of Surgery Yale University School of Medicine New Haven Connecticut United States Department of Radiology Yale University School of Medicine New Haven Connecticut United States

Imaging of both benign and malignant anorectal diseases has traditionally posed a challenge to clinicians, and as a result history and physical exam have been relied on heavily. CT scanning and endorectal ultrasound have become popular in assessment of anatomy and staging of tumors, but have limitations. magnetic resonance imaging (mRI) has the capability to fill in the gaps left open by more conventional imaging modalities and continues to be promising as the definitive imaging technique in the pelvis, especially with advancement of emerging technologies in this field. A comprehensive review of this topic has been undertaken. Anorectal disease is divided into three broad categories: cancer, fistula/abscess, and pelvic floor disorders. A review of the literature is performed to evaluate the use of mRI and other imaging modalities in these three areas. Preoperative imaging is useful in the evaluation of all three areas of anorectal disease. mRI is an effective tool in delineating anatomy and, when correlating with the specific clinical scenario, is an effective adjunct in clinical decision-making in order to optimize outcome. mRI continues to be a promising and novel approach to imaging various afflictions of the anorectum and the pelvic floor. Its role is more well-established in some areas than in others, and there are still signif icant limitations. As technology advances, mRI will shed more light on a complex anatomical area.

关键词： magnetic resonance imaging, Rectal cancer, Pelvic floor disorders Anal fistula and abscess

AmINO ACID SEQUENCES OF TWO PARVALBUmINS FROm ELECTRIC EEL (ELECTROPHORUS ELECTRICUS)

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Science China Chemistry 1985年第9期 926-941页

作者：朱德煦,NOBUYO mAEDA,walter m.FITCH Department of Biology Nanjing Uuiversity Genetics Laboratory University of Wisconsin USA Department of Physiological Chemistry University of Wisconsin-madison USA

Two parvalbumins from the muscle of the electric eel, Electrophorus electricus, were purified by Sephadex G-50 gel filtration followed by DE-52 ion exchange column chromatography. From 350g fresh eel muscle, 100—150mg of pure major component (Parvalbumin Ⅰ, PⅠ=4.25) can be isolated. The content of Parvalbumin Ⅱ is around one-fifth of the major one, and its pⅠ is 3.85. The complete amino acid sequences were determined from the sequences of tryptic peptides and CNBr cleaved fragments. Peptides were aligned by homology. The sequences of the two parvalbumins differed from each other in 22 residues but no variation was found in the residues that are responsible for calcium binding.

关键词： AmINO ACID SEQUENCES OF TWO PARVALBUmINS FROm ELECTRIC EEL ELECTROPHORUS ELECTRICUS DEAE HCI

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上部地壳的流体作用与大理岩的低温塑性

岩石学报 2000年第4期16卷 499-505页

作者：刘俊来 Weber K walter J 吉林大学地球科学系长春130061 格廷根大学岩石圈地质与动力学研究所

本文应用光学显微镜、透射电子显微镜和阴极发光显微镜系统研究了 Waterberg断层带 (纳米比亚 )内粗晶大理岩中发育的构造岩。宏观碎裂结构与微观糜棱状结构是断层构造岩的主要特点。巨大的变形碎屑与弥漫的细小颗粒基质形成了鲜明的反... 详细信息

本文应用光学显微镜、透射电子显微镜和阴极发光显微镜系统研究了 Waterberg断层带 (纳米比亚 )内粗晶大理岩中发育的构造岩。宏观碎裂结构与微观糜棱状结构是断层构造岩的主要特点。巨大的变形碎屑与弥漫的细小颗粒基质形成了鲜明的反差。广泛发育的压溶缝合线与多阶段方解石细脉遍布构造带不同部位。TEm亚微分析表明 ,细粒基质是由粗大碎屑经过亚颗粒旋转 ,并伴随着局部颗粒边界迁移形成的动态重结晶颗粒。虽然亚颗粒粒度具有简单的峰值分布 (～ 0 .3～0 .4μm) ,但动态重结晶颗粒的粒度却具有较大的变化范围 (0 .1～ 3.0μm )并具有多峰值分布的趋势。 TEm亚微结构 (晶格位错结构 )分析与亚颗粒、动态重结晶粒度、变形双晶宽度统计分析充分证明变形—恢复过程的非稳态特点。结合阴极发光分析阐明在上部地壳环境中 ,方解石大理岩经历脆性变形过程中 ,流体相广泛介入到变形作用中 ,并促进岩石的非稳态脆 -韧性转变与低温塑性的出现。

关键词：低温塑性水解弱化大理岩流体作用脆性变形

Enterprise stent-within-stent embolization of a basilar artery perforator aneurysm

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World Journal of Neuroscience 2011年第3期1卷 45-48页

作者： Eric m. Deshaies walter Jacobsen Satish Krishnamurthy 不详

Objective and Importance—Vertebrobasilar artery aneurysms can be very challenging to treat and are preferentially dealt with using endovascular tech-niques, since they are associated with lower risk than surgical clipping. Small aneurysms located on perfo-rating arteries can pose problems though, as their dimensions may not be favorable for coiling and leave the endovascular surgeon without many options. We present a basilar perforating artery aneurysm that was successfully embolized using a stent-within-stent technique. Clinical Presentation—A 47 year old fe-male presented with a Hunt-Hess 3, Fisher Grade-3 subarachnoid hemorrhage with blood in the pre-pontine cistern. Initial imaging (CT angiogram and digital subtraction angiography) did not reveal an aneurysm. Follow-up angiography on post-bleed day eight demonstrated a three-millimeter basilar perforating artery aneurysm. After an unsuccessful coiling attempt a closed-cell stent-within-stent tech-nique was used to divert flow away from the aneu-rysm neck to induce aneurysm thrombosis. Interven-tion (or Technique)—multiple attempts were made to access and stabilize a microcatheter in the small basilar perforator artery aneurysm in order to de-liver coils for endovascular embolization;this could not be done safely. Therefore a closed-cell 4.5 × 22 mm Enterprise stent (Cordis Neurovascular, Inc., miami Lakes, Florida) was deployed in the basilar artery across the origin of the perforator aneurysm in order for the stent tines to divert flow away from the aneurysm neck and induce thrombosis. Persistant brisk flow within the aneurysm continued however, and a second closedcell 4.5 × 22 mm Enterprise stent was placed within the first one to increase the stent metal surface area across the aneurysm neck to further reduce flow into the aneurysm. Subsequently, angiography demonstrated stagnant blood flow in the aneurysm dome and the aneurysm spontaneously thrombosed, sparing all associated vessels. Conclu-sion—Stent-within

关键词： Aneurysm Basilar Enterprise Stent Subara- chnoid Hemorrhage

斯洛伐克西喀尔巴阡山Koice-medvedia菱镁矿床的矿物学、流体包裹体和碳-氧-锶同位素研究(英文)

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岩石学报 2004年第4期20卷 855-876页

作者： martin RADVANEC Peter KODERA walter PROCHASKA Geological Survey of Slovak Republic markusovska cesta 1 052 01 Spisska Nova Ves SlovakiaGeological Survey of Slovak Republic Mlynskd dolina 1 817 04 Bratislava SlovakiaDepartment of Geological Sciences University of Leoben. A-8700 Leoben Austria

Kosice矿床是斯洛伐克第二大的菱镁矿床(150mt),位于Gemeric的东部.其镁质碳酸盐矿体赋存于石炭纪石灰石和含白云石的石灰石中,同时下盘黑色片岩中也含有被铁质碳酸盐交代的薄层碳酸盐透镜体.在华力西期造山运动(m1)中,古生代岩石受到... 详细信息

Kosice矿床是斯洛伐克第二大的菱镁矿床(150mt),位于Gemeric的东部.其镁质碳酸盐矿体赋存于石炭纪石灰石和含白云石的石灰石中,同时下盘黑色片岩中也含有被铁质碳酸盐交代的薄层碳酸盐透镜体.在华力西期造山运动(m1)中,古生代岩石受到了低级变质作用(绿泥石带).镁交代作用始于白云岩1的结晶作用,其后形成菱镁矿,最终沿裂隙形成铁菱镁矿.铁质碳酸盐包括早期铁白云石-白云石,铁白云石和后期含方解石和石英的菱铁矿.根据碳酸盐矿物对地质温度计,白云石l结晶作用发生在300～340℃.这一结果与m1的变质矿物组合(绿泥石,白云母-伊利石)吻合.铁白云石的结晶作用发生在320～370℃.少量细脉中可见白云石2,绿泥石和伊利石-多硅白云母,它们是由于阿尔卑斯期造山运动m2变质作用形成的更晚的矿物组合.菱镁矿的流体包裹体(FI)研究,显示存在不同成分的热卤水,卤水成分变化相当于NaCl含量21～42 wt%,但其它成分的盐含量高于NaCl,溶解的CO2含量也有变化.两相包裹体均一温度(Th)的范围为164～217℃,含石盐子晶包裹体均一温度的范围为217～344℃.富CO2包裹体(盐度相当于NaCl含量1～22wt%,CO2的密度为0.28～0.77 g·cm-3,均一温度为289～344℃)在菱镁矿中是次要的,但这种包裹体在与矿石伴生的石英中是主要的,并且与含石盐子晶流体包裹体共生.在后期镁交代过程中流体中的CO2逐渐增加.和铁质碳酸盐伴生的石英中只有两相包裹体,包裹体中CO2含量有所变化,盐度范围为17～24 wt%的NaCl(或者34～36 wt%的mgCl2),均一温度为152～195℃.包裹体的数据结合碳酸盐地质温度计显示镁交代作用的压力范围是180～320mPa(7～12km),铁交代作用的压力范围是280～420mPa(10～16km),说明地热梯度约为25～35℃/km.包裹体浸出液的分析表明Cl/Br和Na/Br的比值存在变化,但仍旧说明富镁的卤水来源是上二叠纪和下三叠纪的分馏蒸发岩来源.铁质碳酸盐流体的高溴和高碘含量,说明在铁交代过程中周围黑色片岩的明显影响.菱镁矿和铁交代作用,表明交代流体中的碳和二氧化碳,主要是海洋沉积的来源.菱铁矿的'Sr/86Sr比值((0.71124～0.71140),说明锶的多来源,最初应是石炭纪和二叠纪的海水,但它被当地其它陆壳中的锶混染.

关键词：菱铁矿包裹体包裹体流体化学蒸发趋势地质温度计 P—T条件 C-O-Sr同位素 Gemericum区西喀尔巴阡山

Land Development Calculations

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